Light guiding configuration, backlight module and display device

Abstract

A backlight module can include a light guiding board, a light source located at a side of the light guiding board, a package layer coupled to light guiding board, and a quantum dots layer located between the light guiding board and the package layer. The light guiding board can include a light entering face and a light exiting face. The light source is facing the light entering face of the light guiding board. The light source being is configured to provide light to the light entering face of the light guiding board. The quantum dots layer is adjacent to the light exiting face of the light guiding board. The light guiding board and the package layer cooperative define a receiving room receiving the quantum dots layer on the light guiding board.

What is claimed is: 
     
       1. A backlight module comprising:
 a light guiding board comprising a light entering face and a light exiting face; 
 a light source located adjacent to the light guiding board and facing the light entering face of the light guiding board, the light source being configured to emit light towards the light entering face of the light guiding board; and 
 a package layer coupled to the light guiding board; 
 wherein the light guiding board and the package layer cooperative define a receiving room receiving a quantum dots layer on the light guiding board; the receiving room further receives an isolating layer; the isolating layer is located between the package layer and the quantum dots layer, and prevents the quantum dots layer from directly contacting the package layer. 
 
     
     
       2. The backlight module of  claim 1 , wherein the package layer comprises a main portion located on the quantum dots layer and a periphery portion surrounding the quantum dots layer. 
     
     
       3. The backlight module of  claim 2 , wherein the periphery portion of the package layer is coupled to the light guiding board. 
     
     
       4. The backlight module of  claim 3 , wherein the periphery portion of the package layer is directly coupled to the light exiting face of the light guiding board. 
     
     
       5. The backlight module of  claim 3 , wherein the quantum dots layer is in direct physical contact with the light exiting face of the light guiding board. 
     
     
       6. The backlight module of  claim 1 , wherein the isolating layer is stacked on the quantum dots layer and located between the main portion of the package layer and the quantum dots layer. 
     
     
       7. The backlight module of  claim 1 , wherein the isolating layer comprises a main portion stacked on the quantum dots layer and a periphery portion depending from the main portion, the periphery portion of the isolating layer surrounds the quantum dots layer. 
     
     
       8. The backlight module of  claim 7 , wherein the periphery portion of the isolating layer is located between the periphery portion of the package layer and the quantum dots layer. 
     
     
       9. The backlight module of  claim 8 , wherein the periphery portion of the isolating layer is directly coupled to the light exiting face of the light guiding board. 
     
     
       10. The backlight module of  claim 1  further comprising an additional isolating layer in the receiving room and located between the quantum dots layer and light guiding board. 
     
     
       11. The backlight module of  claim 10 , wherein the additional isolating layer is in direct physical contact with the light exiting face of the light guiding board. 
     
     
       12. A light guiding configuration comprising:
 a light guiding board comprising a light entering face and a light exiting face; 
 a quantum dots layer located at a side of the light exiting face of the light guiding board; and 
 a package layer coupled to the light guiding board; 
 wherein the light guiding board and the package layer cooperative define a receiving room receiving the quantum dots layer between the package layer and the light guiding board; the receiving room further receives an isolating layer; the isolating layer is located between the package layer and the quantum dots layer, and prevents the quantum dots layer from directly contacting the package layer. 
 
     
     
       13. The light guiding configuration of  claim 12 , wherein the package layer comprises a main portion located on the quantum dots layer and a periphery portion surrounding the quantum dots layer. 
     
     
       14. The light guiding configuration of  claim 13 , wherein the periphery portion of the package layer is coupled to the light guiding board. 
     
     
       15. The light guiding configuration of  claim 14 , wherein the light exiting face of the light guiding board extends outwards beyond the periphery portion of the package layer. 
     
     
       16. The light guiding configuration of  claim 12 , wherein the isolating layer is a passivation layer made of passive material. 
     
     
       17. The light guiding configuration of  claim 16 , wherein the isolating layer has a thickness no more than 55 micrometers. 
     
     
       18. A display device comprising:
 a light source configured to provide light; 
 a light guiding board configured to guiding the light from the light source, the light guiding board comprising a light entering face facing the light source and a light exiting face; 
 a quantum dots layer located at a side of the light exiting face of the light guiding board; 
 an isolating layer located on the quantum dots layer away from the light guiding board; 
 a package layer coupled to the light guiding board and enclosing the quantum dots layer and the isolating layer on the light guiding board; and 
 a display panel located at a side of the package layer, and configured to receive the light passing through the light guiding board, the quantum dots layer and the package layer; 
 wherein the isolating layer is located between the package layer and the isolating layer, and prevents the quantum dots layer from directly contacting the package layer. 
 
     
     
       19. The backlight module of  claim 1 , wherein a thickness of the package layer ranges from 4 micrometers to about 5 micrometers. 
     
     
       20. The light guiding configuration of  claim 12 , wherein a thickness of the package layer ranges from 4 micrometers to about 5 micrometers.